IisJustMe
He rescued me because He delighted in me (Ps18:19)
- Jun 23, 2006
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... not for this:
http://www.news.harvard.edu/gazette/1999/02.18/light.html
This factual account of how some mere physicists slowed the speed of light to the pace of rushhour traffic (but not in Kansas City, where 38 mph would be amazing at rushhour) calls into question what we think we know about light speed. It calls into question the certainty of these statements:
http://www.news.harvard.edu/gazette/1999/02.18/light.html
This factual account of how some mere physicists slowed the speed of light to the pace of rushhour traffic (but not in Kansas City, where 38 mph would be amazing at rushhour) calls into question what we think we know about light speed. It calls into question the certainty of these statements:
If mere mortals are able to change the speed of light, without God's intervention, what we think we know about the properties of light can never be stated with certainty again. The linked article goes to great pains to explain why this doesn't change anything about the alleged upper limits arbitrarily placed on light speed by Einstein, but the fact of the matter is, if light can be slowed, it can almost certainly be sped up. And as such, the plausibility of stars seemingly more than 6,000 lightyears away actually being visible is again in play.Jadis40 said:IA light year is the distance that light can travel in a year, so pretty simple so far...also, pulled this up from wikipedia:
A light year (or light-year, or lightyear), symbol ly, is the distance light travels in one year: about 9.461 × 1015 metres (9.461 petametres), or about 5.879 × 1012 (nearly six trillion) miles.
And, by definition, the speed of light is - Since the speed of light in a vacuum is exactly 299 792 458 m/s (which is exactly 670 616 629 537/1397 mph) by the definition of metre, one light year is exactly equal to 9 460 730 472 580 800 m (which is exactly 5 878 625 373 183 849/1397 mi).
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